What pencil used iPad 10 generation

For an iPad 10th generation, an Apple Pencil 1st generation with an adapter is compatible. See information in Apple Pencil compatibility - Apple Support including the following:

You can use Apple Pencil (1st generation) with these iPad models:

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• iPad (10th generation)*
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* You need the USB-C to Apple Pencil Adapter to pair and charge Apple Pencil with iPad (10th generation).

The iPad10 supports the first generation Apple Pencil - per Apple’s definitive compatibility list for Apple Pencil and iPad.

Apple Pencil compatibility - Apple Support

Ensure that you have the special Lightning to USB-C adapter that you’ll require for both pairing and charging the Pencil with an iPad10.

New first generation Pencils sourced from Apple should ship with this special adapter in the box along with the Pencil. Some older stock, purchased from retailers, may lack the USB-C to Lightning adapter - and may instead have an older Lightning to Lightning Adapter that looks very similar.

USB-C to Apple Pencil AdapterFor owners of older first generation Pencils, or for “old stock” new Pencils, the new special adapter can be purchased directly from Apple as an accessory.

https://store.apple.com/uk/xc/product/MQLU3ZM/A